Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 28 for “"Juvenile growth"”.
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Influence of environmental conditions on the age, hatch dates, and growth of juvenile Atlantic menhaden in the Choptank River, MD
… Atlantic menhaden has experienced sustained low juvenile production (recruitment) in the Chesapeake Bay. Factors controlling growth, abundance, and mortality of larval and juvenile menhaden change throughout ontogeny such that larval growth rates could carry over to juvenile growth and survival. …
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Growth, Diet, and Reproduction of the Red-Eared Slider (Trachemys Scripta) Inhabiting a Reservoir Receiving a Cold Effluent
… algae (Spirogyra sp.). Using plastral annuli, juvenile growth rates were modeled with regression analysis. Analysis of covariance showed that the juvenile growth rates for the two areas were significantly different (P < .0001). In the normothermic area, plastron length ranged from 102.4mm to …
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Growth of Age-0 Atlantic menhaden (BREVOORTIA TYRANNUS) in Two Tidal Freshwater Tributaries of Chesapeake Bay
Few studies have described growth rates of age-0 Atlantic menhaden (Brevoortia tyrannus). Growth rates from tidal freshwater habitats of the Mattaponi and James Rivers, Virginia in 2009 were described and compared using otolith microstructural analyses. Larval tidal freshwater growth rates were …
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Probing the biology of liver fluke-flukicide interplay
… for overcoming TCBZ-resistant phenotypes in juvenile F. hepatica, through impeding detoxification and regenerative processes. ATP-binding cassette (ABC) transporters are implicated in multidrug resistant cancers through the active export of drugs from cells. Twenty-four putative ABC …
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Local Adaptation for Life-History Traits in Silene Latifolia
… across three latitudinal regions in a growth chamber using seeds from nine EU and NA populations. Germination success or speed was similar among latitudinal regions across continents. My second experiment examined local adaptation at a continental scale; I grew plants from 15 EU and NA …
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Restoration of the endangered Cumberland elktoe (Alasmidonta atropurpurea) and Cumberland bean (Villosa trabalis) (Bivalvia: Unionidae) in the Big South Fork National River and Recreation Area, Tennessee and Kentucky
… Restoration activities include propagation of juvenile mussels and relocation of adults to suitable sites in the Big South Fork of the Cumberland River (BSF) and its tributaries. This study was conducted to identify host fish for Cumberland elktoe (Alasmidonta atropurpurea) and Cumberland bean …
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Population and habitat ecology of the river cooter (Pseudemys concinna) in the New River Gorge National River, W.V.
… at the three study sites respectively, were juveniles. Most hatchling cooters apparently overwintered in the nest and emerged in April. Juvenile growth was rapid and linear until 6 years of age. Adult female cooters were larger (P=0.03) and heavier (P=0.0004) than males. Adult cooters …
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Preventive Measures in Aquaculture: Isolation, Application and Effects of Probiotics on Atlantic cod (Gadus morhua L.) Rearing at Early Stages
… experiment, contributing to increased survival, growth, vitality and microbiota control. A different microbial rotifer treatment was attempted to introduce putative probiotics during larval first-feeding but was not successful and led to high larval mortality. Further, the dominant culturable …
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Population ecology of landlocked Arctic charr, <i>Salvelinus alpinus L</i>., in the Canadian High Arctic
… correlations between population structure, growth rate variation and possible genetic divergence are suggested by this fieldwork and the models examine their credibility. The key hypothesis is that the alternative life history strategies represented by Dwarf and Normal charr represent …
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Liver fluke development: a target for parasite control?
… their dynamics, supportive roles in growth and development and identifying putative regulatory effectors. This study reports increased juvenile growth, which correlated with increased proliferation of these stem-like cells, in juveniles maintained in chicken serum supplemented media …
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Distribution of mutant cells in human skin : exploration of the fetal-juvenile mutability hypothesis
… appears to be a clonal continuation of juvenile growth in adult tissues from which one stem cell creates an embryonic organ with lethal consequences, this thesis is devoted to the analysis of the process of skin cancer development and distribution of mutant cells in human skin, as well …
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Lessons to learn from all out invasion: life history of brown trout (Salmo trutta) in a Patagonian River
… larger scale radii, suggesting faster juvenile growth was documented for fish in sites supporting resident fish versus those supporting anadromous fish, suggesting that food availability indeed may influence the individual ‘decision’ to migrate. The adult population proved to be …
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Lessons to learn from all out invasion: life history of brown trout (Salmo trutta) in a Patagonian River
… larger scale radii, suggesting faster juvenile growth was documented for fish in sites supporting resident fish versus those supporting anadromous fish, suggesting that food availability indeed may influence the individual ‘decision’ to migrate. The adult population proved to be …
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Population variation in the life history traits and thermal responses of Atlantic cod, Gadus morhua L.
… common environment method in which wild-caught juveniles from different regions are reared under common laboratory conditions. I used this approach to determine the population and thermal responses of Atlantic cod, a species with a wide distribution and geographic variation in life history …
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Physiological and genetic mechanism(s) of cold acclimation in Rhododendron
… LFT by about 5--6°C during the period of juvenile growth. This change in CH is likely the reflection of an increased ability to cold acclimate, however, the degree of CH increment in individual progenies varied yearly. Bulked segregant analysis (a PCR-RAPD-based technique) was used to …
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Microscale Variation in Light Intensity and its Effects on Growth of Juveniles of the Temperate Coral, Oculina Arbuscula
… and could affect photosynthetic efficiency and growth in juvenile corals. The goal of this study was to examine the effects of substrate angle on chlorophyll concentrations, algal densities and juvenile growth of the temperate scleractinian coral, Oculina arbuscula. Light intensity was …
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A mechanistic framework for understanding prairie stream fish distributions
… size. I found that adult spawn success and juvenile growth and condition increased with stream size for both species, indicating that these congeners respond similarly to abiotic gradients associated with the river continuum. I concluded that complementary distributions are a consequence of …
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Relationships between climate, growth and fisheries production in a commercially exploited marine fish
… inducing measurable fluctuations in fish growth, condition, and fisheries production. Unfortunately, mechanisms driving these linkages are poorly understood for most exploited species, which hinders effective management. The purpose of this study was to use the Gulf Corvina (Cynoscion …
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Experiments to culture juvenile freshwater mussels in small tanks, floating containers and sediment beds
… culture techniques to rear newly metamorphosed juveniles of the rainbow mussel (Villosa iris). Tanks and floating containers were used outdoors, and sediment beds and floating containers were used in indoor culture experiments. Culture experiments with indoor sediment beds produced modest growth …
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Atlantic sturgeon growth responses to dual seasonal spawning, latitudinal thermal regimes, and Chesapeake Bay environmental stressors
… ATLANTIC STURGEON ACIPENSER OXYRINCHUS GROWTH RESPONSES TO DUAL SEASONAL SPAWNING, LATITUDINAL THERMAL REGIMES, AND CHESAPEAKE BAY ENVIRONMENTAL STRESSORS Erin Lorraine Markin, Doctor of Philosophy, 2017 Dissertation directed by: Professor, Dr. David Secor, University of Maryland Center …
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